Cisco Switching/Routing :: Nexus 5548UP VPC Domain With 1x L3 Card

Apr 9, 2013

I can't find anywhere whether it is possible to create a vPC domain with 2 Nexus 5548UP switches, where only 1 Nexus 5548UP has a L3 daughter card.

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Cisco Switching/Routing :: Nexus 5548UP With L3 Card / Inter-VRF Not Possible?

Aug 28, 2012

I just received a Nexus 5548 to configure as the core of the Datacenter LAN.  Is it true that the VRFs created cannot talk to each other???  I can't seem to find any documentation on how to do this and at least one TAC engineer half-heartedly believes it's not possible, either.
 
Basically, I'm trying to get an SVI in VRF1 to be able to talk to an device on another SVI in VRF2.
 
I can't believe this high-end switch, that is so capable in every regard, cannot handle this feature.

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Cisco Switching/Routing :: Nexus 5548UP VPC Configuration

Jan 26, 2012

I have followed every piece of cisco documentation I could find on this and I still can't get vPC configured to actually work.  The VLANs stay in a suspended state so no traffic flows across.  Below is my configuration:vrf context management  ip route 0.0.0.0/0 10.86.0.1vlan 1,vlan 86  name I.S_Infrastructure,vpc domain 1  role priority 1000  peer-keepalive destination 10.86.0.4,interface Vlan1,interface Vlan86  no shutdown  description I.S._Infrastructure  ip address 10.86.0.1/24,interface port-channel1  switchport mode trunk  vpc peer-link  spanning-tree port type normal,interface Ethernet1/1  switchport mode trunk  channel-group 1 mode active,interface Ethernet1/2  switchport mode trunk  channel-group 1 mode active ,interface Ethernet1/3,escription Connection to Mgmt0  switchport access vlan 86  speed 1000.

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Cisco Switching/Routing :: Change Airflow Of The Nexus 5548UP?

Aug 6, 2012

is it possible to change the airflow of the Nexus 5548UP in the field by replacing fan and power supply or must the correct airflow been ordered.

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Cisco Switching/Routing :: Nexus 5548UP / Two Management Interfaces For N5k

Jan 10, 2013

I have a Nexus 5548UP that would be managed by two organizations. Is it possible to set IP addresses for mgmt0 and an SVI (or an L3 interface) without using the L3 daughter card? I don't want to route between VLANs, just to separate management traffic.

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Cisco Switching/Routing :: Nexus 5548UP / L3 Cannot Do Inter-VRF Communications?

Aug 28, 2012

I'm trying to get a node in SVI1 on VRF1 to speak to another node in SVI2 on VRF2 to reach each other.  After hours of failure, I went to outside resources.  Everything I read on the internet says it's not possible on this platform and at least one TAC engineer seems to agree.
 
I just can't believe such a high-end data center switch is not capable of handling such a basic feature.

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Cisco Switching/Routing :: Replacing C4507R-E With Nexus 5548UP?

Jul 25, 2012

We currently have an environment with a 4507 as the core switch connected to four stacks of 3750e's in the wiring closets. A pair of Nexus 5548UP's also hangs off the 4507, but at the moment more or less dedicated to a certain purpose..The 5548UP's have the L3 daughter card installed.
 
My question is: Can a pair of Nexus 5548UP's do a C4507's job? Would we be able to decomission the 4507 and replace with the existing 5548UP's + FEXes?

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Cisco Switching/Routing :: Nexus 5548UP To 2248 Design

Aug 10, 2012

This past networkers I was at the Cisco booth discussing how the 2248 can connect to the 5548 and have server connectivity.  It was told to me that now, as of a fairly recent NX-OS release, you can have the 2248 going dual-homed to both 5548 via VPC and then have a server connected to both 2248 and be in active-active mode.  Is this correct?
 
When we first deployed our 5548 and 2248 we had to put the 2248 in a straight pin mode, where it only had connections to one 5548 and then the server would dual connect to the 2248's and be in active-active mode.  I was told that this changed with an NX-OS release however documentation still seems to be fragmented on what exactly is the case. 

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Cisco Switching/Routing :: Nexus 5548UP - Management Interface

Apr 21, 2013

How separate is the management interface on a Nexus 5548?
 
In context - what's the risk of having a layer 2 only Nx5K in a DMZ and running the managment ports down into an internal managment VLAN, to form peer-keepalive links and software upgrades.

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Cisco Switching/Routing :: How To Let Nexus 5548UP Act As DHCP Server

Nov 14, 2011

it's possible to let the Nexus 5548UP act as a DHCP server? (or if it will be possible in future releases)

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Cisco Switching/Routing :: Nexus 5548UP - FCoE QoS Configuration

Dec 6, 2012

I am looking to implement a QoS policy on a pair of Nexus 5548 UPs. FCoE is a factor here. I have created the following configuration and would like to get a few pairs of eyes to take a look at this for a quick sanity check.
 
How to make sure this config is valid. Also, I realize I'm applying an MTU of 9216 to all classes right now, this will be phased out incrementally.
 
class-map type qos match-all class-platinum
  match cos 5
class-map type qos match-all class-gold
  match cos 4
class-map type qos class-fcoe
  match cos 3
[code]....

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Cisco Switching/Routing :: Add 2 X Nexus 5548UP Switches At Site 1

Mar 5, 2013

I have 2 sites located approximately 30 kilometers apart.  I will call them site 1 and site 2.The sites are connected by a Layer 2 1GB fibre connection.I would like to add 2 X Cisco nexus 5548UP switches at site 1 and connect these 2 X Cisco nexus 5548UP switches via GLBP
 
I would then like to add 2 X Cisco nexus 5548UP switches at site 2 and connect these 2 X Cisco nexus 5548UP switches via GLBP.I would then like to connect the 2 X Cisco nexus 5548UP switches at site 1 and the 2 X Cisco nexus 5548UP switches at site 2 via GLBP.

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Cisco Switching/Routing :: Nexus 5548UP Switches - Load Balancing?

Mar 10, 2013

The best option for load balancing between 2 X Cisco nexus 5548UP switches located at one site and connecting to 2 X Cisco nexus 5548UP switches located at another site.
 
The sites are connected via a 1GB fibre connection. I am unable to use GLBP until GLBP is supported in further software releases.

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Cisco Switching/Routing :: LLDP Chassis Discovery On Nexus 5548UP?

May 1, 2012

I'm seeing several error messages like these in the logs of my Nexus 5548UP switches.

2012 Apr 24 16:39:41.470 SSV_5K_SW2 %LLDP-5-SERVER_ADDED: Server with Chassis ID aaaa.bbbb.cccc Port ID mgmt0 management address X.X.X.X discovered on local port mgmt0 in vlan 0 with enabled capability Bridge
 
2012 May  2 05:05:00.627 COR_CCO-NX-5548-UP_01 %LLDP-5-SERVER_REMOVED: Server with Chassis ID aaaa.bbbb.cccd Port ID aaaa.bbbb.cccc on local port Eth1/1 has been removed
 
2012 May  2 05:06:40.328 COR_CCO-NX-5548-UP_01 %LLDP-5-SERVER_ADDED: Server with Chassis ID aaaa.bbbb.cccd Port ID aaaa/bbbb.cccc management address NIL discovered on local port Eth1/1 in vlan 0 with enabled capability None
 
I will say that these 5548s are serving as the distribution layer for a UCS chassis (2x 6120 FIs) but didn't know what kind of visibility the Nexus would have into that - the chassis keyword is what's alluding to this in my mind, and I'm seeing these messages whenever interfaces that connect downstream to the fabric interconnects are brought up or down.

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Cisco Switching/Routing :: Nexus 5548UP Connectivity With Router 2811

Aug 15, 2012

In the existing network we have Cisco 2811 router connected to Corporate MPLS cloud. Cisco 2811 is connected to Catalyst 6509 switch(set based IOS with MSFC card). Along with that we have two Catalyst 5509. We are upgrading the access layer by replacing catalyst switches with Nexus 5548 & 2248.
 
For a purpose of testing I have connected 5548 & 2248. Created cPC and ether channels between two. SVI and HSRP configuredon 5548. I am terminating 2651 (test router) on 2248 port 101/1/1. On 5548 I have enabled EIGRP on vlans. I am unable to ping to 2651 from nexus switch 5548 and vice-versa. I can see both devices on CDP but I do not see eigrp neighborship formed.
 
What configuration should go in 2248 and 2651 in order to establish a connection between two? If test is successful then I will connect 2811 to 2248 during actual migration. I assume that in testing if it works for 2651 then it must work on 2811 router.

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Cisco Switching/Routing :: Nexus 5548UP Change Peer Keep Alive Link

Apr 19, 2013

I have a pair of Nexus 5548UPs that have some high priority servers running on them.  Servers are ESX hosts running Nexus 1000v's.  Each host has multple connections in a VPC to both 5548s.  We have been having intermittant ping loss and slowness of traffic to the VM's on these hosts.  I was poking around trying to figure out what the issue could be and found that the peer-keepalive command was not set to send the heart beat across the mgmt0 interface.  I would like to change this to point it accross the mgmt0 interface. Any tips or advice for me on making this change with production servers running on the switches?  I do not want to cause any loss to any systems when I make this change. [Code] ..........

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Cisco Switching/Routing :: Nexus 5548UP - (Physical Address Changes) Messages In SolarWinds

Dec 9, 2012

We have recently upgraded oor LAN and we are using couple of Nexus5548UP switches in the core with 2960 stacks as access switches. Each access switches stack is connnected to both core switches with link being port-chanels and VPCs. All is working fine, but our SolarWinds management platform (NPM) is being flooded with "Physical Address changed" events. Here is an example of messages:
 
NSW_Core_2 - Ethernet1/7 Physical Address changed from 000000003811 to 73616D653811
NSW_Core_2 - Ethernet1/7 Physical Address changed from 200B82B43811 to 000000003811
 
For each interface I have messages like these repeating.I am not sure what those messages means or if there is actually anything wrong. Performance of the network is good, there are no errors on any interfaces and I do not see anything related in the switch loggs.

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Cisco Switching/Routing :: Nexus 5548UP With 2232TM Fabric Extender And Server Teaming

Oct 11, 2012

Need clarification on the VPC with 5k and 2248 Fabric Extenders. My question  is can each fabric extender uplink to two different 5ks, and  at the same time, have servers connected to two both fabric extenders with a VPC.So basically, the server NIC will team with two different fabric extenders, and each fabric extender will connect to two different 5k's.

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Cisco Switching/Routing :: Enable Jumbo Frames On Single VLAN (Nexus 5548UP)

Sep 17, 2012

We are currently using two Nexus 5548UP's as our Datacenter Network Core.  I have a pretty simple objective:  I would like to enable Jumbo Frames on a single VLAN only(VLAN 65).  This VLAN is used strictly for backups.  I do not want to enable Jumbo Frames on the other VLANs(VLANs 1-10).  Im not sure what the best way to do this is.....or if it is even possible but I am hoping to get some configuration examples.

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Cisco Switching/Routing :: Nexus 5k With L3 Card Showed Offline?

Aug 30, 2011

i have a nexus 5k with a l3 card i'm not able to bring online
 
NX-OS is:5.0(3)N2 (1)
L3 card is:L55D160L3
 
i inserted L3 module several time with the same resul...if i perform a show module i see the card offline. At the boot switch show an error message:
 
L3 module is down due to a BTCM down..

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Cisco Switching/Routing :: Nexus 7000 10Gig Card Not Seeing Transceiver Module?

Nov 13, 2011

I'm unable to get the N7K-M108X2-12L 10 Gbps Ethernet XL Module within our Nexus 7009 chassis to recognise the individual X2-10GB-SR transceiver modules. I have the same issue on another 7009 chassis.If I perform a 'show interface'. I get the following output saying SFP not inserted.
 
-Ethernet3/5 is down (SFP not inserted)
-Dedicated Interface
-Belongs to Po51
-Hardware: 10000 Ethernet, address: 7081.0599.d458 (bia 7081.0599.d458)
 
I also get the same result if I issue the following command.  Are their any additional features I need to enable? or would this be a license issue?
Have already tried different X2-10GB-SR modules, reloading the card, re seating the card. [code]

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Cisco Switching/Routing :: Does Nexus 7K Support Multiple VDCs Sharing Ports On Single Line Card

Mar 19, 2013

Does Nexus 7K support Multiple VDCs sharing ports on a single line card. One of our cisco parnter engineers stated that cisco doenst recommend using same line card for multiple VDCs.The second VDC (Non-Default VDC) will be used four our Outside, and DMZ Segment, and to phyiscally segregate our Firewall from our Internal/Inside Core Switch without using a physical DMZ Switch.I know Cisco used the Nexus in this way in their PCI DSS 2.0 Compliance Document. Module is N7K-M148GT-11L
 
Mod  Ports  Module-Type                      Model              Status
---  -----  -------------------------------- ------------------ ------------
1    48     10/100/1000 Mbps Ethernet XL Mod N7K-M148GT-11L
Mod  Ports  Module-Type                      Model              Status
---  -----  -------------------------------- ------------------ ------------
1    48     10/100/1000 Mbps Ethernet XL Mod N7K-M148GT-11L

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Cisco :: Nexus 5548UP 2248TP To 3650G Vlan1 Trunking

Jun 4, 2012

Got an odd problem with trunking, all vlans except vlan1 trunk perfectly. Link is from a pair of dualhomed FEX 2248TP's to some 3650G Switches. Nexus running - version 5.1(3)N2(1) 3560's running - 12.2(53)SE2 & 15.0(1)SE2

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Cisco Switching/Routing :: Nx 5548UP After Reboot Log Shows Vpc Down

May 23, 2013

We have a Nx5548up pair connected to FI6248 via a vPC. We had to reboot a FI (in order to configure more FC ports) ; following that reboot, we meet many issues.The first log shows the vPC down showing the FI rebbot.2013 May 23 12:31:45 sw-n5kup-fr-eqx-01 %ETH_PORT_CHANNEL-5 PORT_INDIVIDUAL_DOWN: individual port Ethernet1/2 is down

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Cisco Switching/Routing :: Packet Discard On Nexus 5020 Link To Nexus 5K

Feb 23, 2011

We are facing issue of continous packet discards On nexus4001L link (int po2) to Nexus5020 switch. Nexus4001L is installed in IBM blade center server and we have FCOE enabled in this setup. [code]

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Cisco Switching/Routing :: Nexus 7000 With Fabric Extenders Nexus 2000?

Mar 15, 2013

I have been tasked to replace the existing Cat 6500 and 3750 switches by Nexus 7000 and Nexus 2000.I was told initially my boss plans to get 2 x Nexus 7000 and then eventually blow up to 4 x Nexus 7000s.For Nexus, is there a list of tasks / points that i need to consider for building the initial design?
 
Can i just link the Nexus 7000 like the following?
 
N7k-A    =========   N7k-B
|                                   |           
lots of N2ks               lots of N2ks

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Cisco Switching/Routing :: Nexus FEX Transceivers SNMP MIB Nexus 5000

Dec 22, 2011

Struggle to find the SNMP MIBS of the Nexus 5000 FEX tranceivers.

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Cisco Switching/Routing :: Datacenter Design With 2 Nexus 5K And 4 Nexus 2K?

Nov 13, 2012

we are planning a Nexus datacenter project with this layout:Our experiences with Nexus switches are not so large until now and the manuals are very extensive.Both N5K´s should be connected directly with all 4 N2K switches. I did not find a layout like this in the manuals. Only a design,where only 2 N2K are connected to one N5K, with this fex config:Now I´m not sure if it is right to make a config like this with the same slots and fex´s or with different slots and fex´s.

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Cisco Switching/Routing :: 6509 Etherchannel Between Two Vtp Domain

Mar 25, 2013

I have two switches 6509 one switch is confire with VTP domain ABC Other switch is configure with ABZ, At present the switch is configure with the L3 interface and one fiber cable is connected between two switches.I want to remove L3 configuration wants to make L2 etherchannel and wants to ceraeate Loop back will assing same ip both side.The OSPF is configure both side , i will not do any changes in the OSPF as L3 ip is advertise in OSPF.

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Cisco Switching/Routing :: VTP Server / Domain Configured On 6509

May 14, 2012

In the following scenario, how will the 2950/2960/2960S series behave:
 
- VTP server/domain configured on a 6509
- A access switch (2960) currently configured in transparent mode with all VLAN it requires
 
Will the switch drop any traffick if we change it from transparent to client mode if the VTP server has the exact same vlans defined as the access switch had when it was in transparent mode?

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Cisco Switching/Routing :: 3560X-24T-L Joining A Switch To VTP Domain

Sep 28, 2012

I am trying to join a Cisco Catalyst 3560X-24T-L to an existing VTP domain, my question is what configurations should I do to this switch?I have already gave it a hostname, setup passwords, enabled telnet, created a management address on port g0/24.I would like it to be on VLAN 13, is this done from my server switch, or done on the new switch?

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Cisco Switching/Routing :: Unable To Add New 3750G Switch Into Existing Domain

Mar 30, 2013

i am not able to add new 3750G switch into existing domain even after the domain name is correct and unable to authenticate with tacacs.

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Cisco Switching/Routing :: IE-3000-4tc - Use Of REP In Large Spanning Tree Domain

Feb 8, 2011

A question concerning the use of REP for IE-3000-4TC  switches:
 
In figure 14 of REP pdf URL can you explain why this  creates a loop in the system? From the document, I thought REP and RSTP could  talk to each other so why does this create a loop if they are exchanging  information between each other? Also, if, in figure 14, the two switches in the  STP domain that connect to the REP ring, were also connected to each other,  would there still be a loop in the system?
 
Also, what is the recommended max diameter a REP ring should be. I thought I read some  place 130 nodes is ok, but I'm looking to confirm this.

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